Quote:
Originally Posted by Robert_Nash
Interesting article...I wonder how Amsoil would have done???
I suspect Amsoil wasn't tested because it's not as widely available as most brands.
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Found this for power results.
The 2007 Synthetic Oil Shootout - My Pro Street
From what I've seen, Amsoil is in the top and one of the more proven formulas. Royal Purple tests very good but long term testing is still a bit lacking. I know RP was a total phenom in the local oil industry here but they don't have a long term presence in auto yet.